One of the promoters for the Saul “Canelo” Alvarez-Austin Trout world title unification bout April 20 at the Alamodome reports ticket sales have soared “through the roof” since they went on sale Wednesday.

“We did about $700,000 in sales the first three hours, which is over 6,000 tickets,” said Mike Battah of Leija/Battah Promotions, which is partnering with Golden Boy Promotions for the event. “We thought they'd do well, but we didn't know they'd do this well.

“They're through the roof. It's pretty exciting.”

As of Saturday, Battah said ticket sales have topped 20,000. The Alamodome will be configured to seat 40,000 for the card that will be televised on Showtime.

Battah said tickets are still available in all price ranges — $10, $25, $50, $100, $150 and $300 — and can be purchased at the dome box office, all Ticketmaster locations and ticketmaster.com.

Card taking shape: Most of the matches have been completed for the eight-bout pro boxing card, “The Quest,” set for Saturday at Sunset Station. Doors open at 6 p.m. First bell is at 7:30.

Tickets — $50 for VIP and $20 for general admission — are available at the door and by calling 210-589-7654.

A news conference to introduce the fighters is scheduled for 2 p.m. Wednesday at Legends Sports Bar, Loop 410 and Marbach.

Book signing: Former world champion “Jesse” James Leija will sign copies of his children's book, “Jesse and the Boogeyman,” from 1 to 3 p.m. Saturday at Half Price Books, 125 NW Loop 410. The book, for ages 4-10, features a character named Jesse based on the San Antonio native's childhood.